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hw/i386: Use Rev3 FADT (ACPI 2.0) instead of Rev1 to improve guest OS support.

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This updates the FADT generated for x86/64 machine types from Revision 1 to 3. (Based on ACPI standard 2.0 instead of 1.0) The intention is to expose the reset register information to guest operating systems which require it, specifically OS X/macOS. Revision 1 FADTs do not contain the fields relating to the reset register.

The new layout and contents remains backwards-compatible with operating systems which only support ACPI 1.0, as the existing fields are not modified by this change, as the 64-bit and 32-bit variants are allowed to co-exist according to the ACPI 2.0 standard. No regressions became apparent in tests with a range of Windows (XP-10) and Linux versions.

The BIOS tables test suite's FADT checksum test has also been updated to reflect the new FADT layout and content.

Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-Id: <1489558827-28971-2-git-send-email-phil@philjordan.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Phil Dennis-Jordan 2017-03-15 19:20:26 +13:00 • committed by Paolo Bonzini
parent e619b14746
commit 77af8a2b95
4 changed files with 93 additions and 49 deletions
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10
tests/acpi-utils.h
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@ -87,6 +87,16 @@ typedef struct {
g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
} while (0)
#define ACPI_READ_GENERIC_ADDRESS(field, addr) \
do { \
ACPI_READ_FIELD((field).space_id, addr); \
ACPI_READ_FIELD((field).bit_width, addr); \
ACPI_READ_FIELD((field).bit_offset, addr); \
ACPI_READ_FIELD((field).access_width, addr); \
ACPI_READ_FIELD((field).address, addr); \
} while (0);
uint8_t acpi_calc_checksum(const uint8_t *data, int len);
uint32_t acpi_find_rsdp_address(void);
void acpi_parse_rsdp_table(uint32_t addr, AcpiRsdpDescriptor *rsdp_table);